-7x+14y=-14
-3x+7y=-3
when using elimination you need to multiply or divide one equation to be able to “eliminate” a variable.
-7x+14y=-14
-2(-3x+7y=-13)
multiply the second equation by -2
-7x+14y=-14
6x-14y=6
simplify
-1x=-8
divide by -1 on both sides to isolate the x
x=8
now you can plug in 8 for x in one of the equations.
-3(8)+7y=-3
simplify
-24+7y=-3
add -24 to both sides the isolate the constant and variable
7y=21
now divide by 7 on both sides to isolate y
y=3
this system of equation had one solution at (8, 3)
i hope this helps :)
Answer:
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Step-by-step explanation:
Answer/Step-by-step explanation:
✔️Sin 22° = opp/hyp
Opp = 15
Hyp = 40
Sin 22° = 15/40
Simplify
Sin 22° = ⅜
✔️Tan 22° = opp/adjacent
opp = 15
Adjacent = √(40² - 15²) (pythagorean theorem)
Adjacent = √1,375 = 37.1 (nearest tenth)
Tan 22° = 15/37.1
The slope of line R is -1
